What was found
UPPER SUN GEAR WITH ONLY 143.1 HRS HAS NITRITING BREAKING DOWN, TEETH FRETTING AND PITTING. RETURNING ON ERA MMIR NR ERAA0001972 REQUESTING CREDIT.
- Difficulty date
- January 20, 2004
- Submitted
- February 17, 2004
- Operation
- Air carrier
- Aircraft
- N169EH
- Make and model
- Bell 412
- Aircraft serial
- 33064
- Aircraft time
- 12,272 hours
- Engine
- Pwa PT6T3
- System (JASC)
- 6320 · Main Rotor Gearbox
- Part
- Sun Gear
- Part number
- 205040230003
- Part serial
- A4861
- Condition
- Corroded
- Location
- M/R Head
- Part time
- 143 hours
- Stage of operation
- NR
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.